This issue brief highlights a number of Medicaid prescription drug issues that remain for states after the movement of dual eligibles into the Medicare Part D drug benefit. The brief describes new data, prepared by Mathematica and available on the Centers for Medicare & Medicaid Services...

In this paper, we address the question of Data Envelopment Analysis (DEA) evaluation of efficiency when aggregate cost or revenue data must be used. We show that the DEA technical inefficiency measure using total revenues as the single output variable or total costs as the single input variable...

Confidence intervals for the mean of one sample and the difference in means of two independent samples based on the ordinary-t statistic suffer deficiencies when samples come from skewed distributions. In this article, we evaluate several existing techniques and propose new methods to improve...